iPadOS 12.4 (build 16G5027i) is an official Apple over-the-air update for the iPad Air 3 (Cellular), released on 2019-05-20T17:06:37Z. The update package is 72.16 MB. This is a delta (partial) update that requires 12.4 already installed. This update is no longer signed by Apple, meaning it can no longer be applied on-device through Settings.

Payload file: 67daa5717465417a252abc9742156164cb349040.zip.